Portion of a shoe upper



FIG. 1 is a left side elevational view of a portion of a shoe upper showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof; and,

FIG. 4 is a rear elevational view thereof.

The broken line showing the remainder of the shoe in the Figures is environmental and forms no part of the claimed design. 

The ornamental design for a portion of a shoe upper, as shown and described. 